The blind flange is used to close ends of piping systems.
A figure-8 blank (also called a Spectacle Blind Flange) is+ a pressure-retaining plate with one solid end and one open end connected with a web or tie bar.
The lap joint flange is practically identical to a slip-on flange except it has a radius at the intersection of the bore and flange face.
Orifice flanges are used instead of the standard pipe flanges when orifice plate or flow nozzle is used.
A reducing flange consists of a flange with one specified diameter having a bore of a different and smaller, diameter.
Ring Type Joint Flange is a method of ensuring leak proof flange connection at high pressures.
The NW Long Weld Neck Flanges is normally referred to as the high hub flange.
The Slip-on flange has a low hub because the pipe slips into the flange prior to welding.
Threaded (Screwed) flange is similar to the Slip-On flange, but the bore is threaded.
The Welding neck flanges is normally referred to as the high hub flange.